# 1. 添加cmake版本说明
cmake_minimum_required(VERSION 3.1.3)
# 2. 声明工程名称
project(user-server)

set(CMAKE_CXX_STANDARD 17)
set(CMAKE_CXX_STANDARD_REQUIRED ON)  # 强制要求 C++17，不存在则报错
set(CMAKE_CXX_EXTENSIONS OFF)  # 禁用编译器扩展（如 gnu++17）

set(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} /usr/local/lib)

set(target "gatewayServer")

set(util_path ${CMAKE_CURRENT_SOURCE_DIR}/../util)
set(common_path ${CMAKE_CURRENT_SOURCE_DIR}/../common)
set(odb_path ${CMAKE_CURRENT_SOURCE_DIR}/../odb)
set(proto_path ${CMAKE_CURRENT_SOURCE_DIR}/../proto)
set(mysql_path ${CMAKE_CURRENT_SOURCE_DIR}/../mysql)
set(thrid_path ${CMAKE_CURRENT_SOURCE_DIR}/../thrid)

# 3. 检测并生成proto框架代码
#   1. 添加所需的proto映射代码文件名称
set(proto_files base.proto file.proto user.proto speech.proto transmite.proto 
                            message.proto friend.proto notify.proto 
                            gateway.proto)

#   2. 检测框架代码文件是否已经生成
set(proto_h "")
set(proto_cc "")
set(proto_srcs "")
foreach(proto_file ${proto_files})
#   3. 如果没有生成，则预定义生成指令 -- 用于在构建项目之间先生成框架代码
    string(REPLACE ".proto" ".pb.h" proto_h ${proto_file})
    string(REPLACE ".proto" ".pb.cc" proto_cc ${proto_file})
    if (NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}${proto_cc})
        add_custom_command(
            PRE_BUILD
            COMMAND protoc
            ARGS --cpp_out=${CMAKE_CURRENT_BINARY_DIR} 
                 --experimental_allow_proto3_optional
                 -I ${proto_path} ${proto_file}
            DEPENDS ${proto_path}/${proto_file}
            OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${proto_cc} 
                   ${CMAKE_CURRENT_BINARY_DIR}/${proto_h}
            COMMENT "生成proto框架代码文件:" ${CMAKE_CURRENT_BINARY_DIR}/${proto_cc} 
                                            ${CMAKE_CURRENT_BINARY_DIR}/${proto_h}
        )
    endif()
#   4. 将所有生成的框架源码文件名称保存起来 student-proto.cxx classes-proto.cxx
    list(APPEND proto_srcs ${CMAKE_CURRENT_BINARY_DIR}/${proto_cc})
endforeach()

# 4. 获取源码目录下的所有源码文件
set(server_src_files "")
aux_source_directory(${CMAKE_CURRENT_SOURCE_DIR}/source server_src_files)

# 5. 声明目标及依赖
list(APPEND server_src_files ${common_path}/log.cpp 
                      ${common_path}/etcd.cpp
                      ${common_path}/channel.cpp
                      ${common_path}/data_redis.cpp
                      ${util_path}/uuid.cpp
                      ${util_path}/cjson.cpp)

# 7. 设置需要连接的库
add_executable(${target} ${server_src_files} ${proto_srcs})
target_link_libraries(${target} -lbrpc -lprotobuf -lgflags -lssl -lcrypto 
                                -lleveldb -lspdlog -lfmt -letcd-cpp-api 
                                -lcpprest -lcurl 
                                -lhiredis -lredis++ -lgflags
                                /usr/local/lib/libjsoncpp.so)

# 6. 设置头文件默认搜索路径
include_directories(${CMAKE_CURRENT_BINARY_DIR})
include_directories(${util_path})
include_directories(${common_path})
include_directories(${odb_path})
include_directories(${mysql_path})
include_directories(${thrid_path})
include_directories(${CMAKE_CURRENT_SOURCE_DIR}/source)

#8. 设置安装路径
INSTALL(TARGETS ${target} RUNTIME DESTINATION bin)